They are concerned about me or anyone else (contractors, vendors, tradesman, inspectors, etc.) injuring themselves when attempting to VIEW the property; particularly the interior of the house given the compromised floors and staircases.

He didn't know his insurance lapsed over the summer, and his son was injured requiring hospital attention--his son broke his leg and it required surgery to fix.

If you are the one managing the properties, the llc will not do anything to shield you from liability for negligent management - the injured tenant will just sue you personally.

They will be your employee, so you need to have worker's comp to protect yourself, and general liability to protect others that your employee may injure by not clearing the snow properly or by flinging rocks and debris from the lawn mower.

Without a license, they are legally your employee, so if they get injured or die and they or their family sues you, you are the liable party.

Too easy to create a hazard either from protruding into a walkway where someone will injure themselves on it, or it will be draining condensate onto the sidewalk that they do not clean, creating a slip/fall hazard.

It depends on the State WC laws as to how at risk you are if a sub or sub's employee gets injured and there is no coverage). 

@Mike Reynolds I’m surprised more people are t seriously injured flipping houses

If someone injures themselves and sues, they will be suing the LLC and not you personally.

Let her know it is a safety issue and someone in parking spot #2 could injure themselves.